<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 提示区域 -->
      <el-alert
        title="添加商品信息"
        type="info"
        center
        show-icon
        :closable="false"
      />
      <!-- 步骤条区域 -->
      <el-steps
        :space="200"
        :active="activeIndex - 0"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"> </el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

      <!-- 表单区域 -->
      <el-form
        :model="addGoodsForm"
        :rules="addGoodsFormRules"
        ref="addGoodsFormRef"
        label-width="100px"
        label-position="top"
      >
        基本信息
        <!-- tab栏区域 -->
        <el-tabs
          :tab-position="'left'"
          v-model="activeIndex"
          :before-leave="beforeTabLeave"
          @tab-click="tabClicked"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addGoodsForm.goods_name" />
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addGoodsForm.goods_price" type="number" />
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addGoodsForm.goods_weight" type="number" />
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addGoodsForm.goods_number" type="number" />
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <div class="block">
                <el-cascader
                  v-model="addGoodsForm.goods_cat"
                  :options="cateList"
                  :props="cateProps"
                  @change="handleChange"
                ></el-cascader>
              </div>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              v-for="item in manyTabData"
              :label="item.attr_name"
              :key="item.attr_id"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="cb"
                  v-for="(cb, i) in item.attr_vals"
                  :key="i"
                  border
                >
                </el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyTabData"
              :key="item.attr_id"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              :action="uploadURL"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headerObj"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <!-- 富文本编辑器 -->
            <quill-editor
              v-model="addGoodsForm.goods_introduce"
              ref="myQuillEditor"
            >
            </quill-editor>
            <!-- 添加商品按钮 -->
            <el-button type="primary" class="btnAdd" @click="addGoods"
              >添加商品</el-button
            >
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>

    <!-- 图片预览对话框 -->
    <el-dialog
      title="图片预览"
      :visible.sync="previewDialogVisible"
      width="30%"
    >
      <img :src="previewPath" alt="" class="previewImg" />
    </el-dialog>
  </div>
</template>

<script>
import GoodsListBreadcrumb from './childComps/GoodsListBreadcrumb.vue'

import { getCateList, getParams, addGoods } from 'network/addgoods'

import _ from 'lodash'
export default {
  components: { GoodsListBreadcrumb },
  name: 'AddGoods',
  data() {
    return {
      activeIndex: '0',
      addGoodsForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [],
        pics: [],
        goods_introduce: '',
        attrs: [],
      },
      addGoodsFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' },
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' },
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' },
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' },
        ],
        goods_cat: [
          { required: true, message: '请选择商品分类', trigger: 'blur' },
        ],
      },
      cateList: [],
      cateProps: {
        expandTrigger: 'hover',
        label: 'cat_name',
        value: 'cat_id',
        children: 'children',
      },
      manyTabData: [],
      onlyTabData: [],
      uploadURL: 'https://lianghj.top:8888/api/private/v1/upload',
      headerObj: {
        Authorization: window.sessionStorage.getItem('token'),
      },
      previewPath: '',
      previewDialogVisible: false,
    }
  },
  computed: {
    cateId() {
      if (this.addGoodsForm.goods_cat.length === 3)
        return this.addGoodsForm.goods_cat[2]
      return null
    },
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const res = await getCateList()
      if (res.meta.status !== 200)
        return this.$message.error('获取商品分类数据失败')
      this.cateList = res.data
    },
    handleChange() {
      if (this.addGoodsForm.goods_cat.length !== 3)
        this.addGoodsForm.goods_cat = []
    },
    beforeTabLeave(newActiveName, oldActiveName) {
      if (oldActiveName === '0' && this.addGoodsForm.goods_cat.length !== 3) {
        this.$message.error('请先选择商品分类!')
        return false
      }
    },
    async tabClicked() {
      if (this.activeIndex === '1') {
        const res = await getParams(this.cateId, 'many')
        if (res.meta.status !== 200)
          return this.$message.error('获取商品参数列表失败!')
        res.data.forEach((item) => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
        })
        // console.log(res.data)
        this.manyTabData = res.data
      } else if (this.activeIndex === '2') {
        const res = await getParams(this.cateId, 'only')
        if (res.meta.status !== 200)
          return this.$message.error('获取商品属性列表失败!')
        this.onlyTabData = res.data
        // console.log(this.onlyTabData)
      }
    },
    // 处理图片预览
    handlePreview(file) {
      this.previewPath = file.url
      this.previewDialogVisible = true
    },
    // 移除图片操作
    handleRemove(file) {
      // 获取图片在服务器的临时路径
      const filePath = file.response.data.tmp_path
      // 获取在pics数组中的索引值
      const index = this.addGoodsForm.pics.findIndex(
        (item) => item.pic === filePath
      )
      // console.log(index)
      this.addGoodsForm.pics.splice(index, 1)
    },
    handleSuccess(response) {
      const picInfo = { pic: response.data.tmp_path }
      this.addGoodsForm.pics.push(picInfo)
    },
    addGoods() {
      this.$refs.addGoodsFormRef.validate(async (valid) => {
        if (!valid) return this.$message.error('请填写完整的商品信息!')
        // 处理动态参数/静态属性
        this.manyTabData.forEach((item) => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(' '),
          }
          this.addGoodsForm.attrs.push(newInfo)
        })

        this.onlyTabData.forEach((item) => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals,
          }
          this.addGoodsForm.attrs.push(newInfo)
        })

        // 需要深拷贝addGoodsForm对象 lodash cloneDeep()
        const form = _.cloneDeep(this.addGoodsForm)
        form.goods_cat = form.goods_cat.join(',')

        const res = await addGoods(form)
        // console.log(res)
        if (res.meta.status !== 201) return this.$message.error('添加商品失败!')
        this.$message.success('添加商品成功')
        this.$router.push('/goods')
      })
    },
  },
}
</script>

<style lang="less" scoped>
.el-steps {
  margin: 15px 0;
}

.el-checkbox {
  margin-right: 10px;
}

.previewImg {
  width: 100%;
}

.btnAdd {
  margin-top: 15px;
}
</style>